linux-kernel - Re: [PATCH] lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA

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Date:	Mon, 20 May 2013 11:13:17 +0100
From:	David Howells <dhowells@...hat.com>
To:	Chen Gang <gang.chen@...anux.com>
Cc:	dhowells@...hat.com, james.l.morris@...cle.com,
	Rusty Russell <rusty@...tcorp.com.au>,
	dmitry.kasatkin@...el.com, andriy.shevchenko@...ux.intel.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA_FLAGS=-W'.

Chen Gang <gang.chen@...anux.com> wrote:

> For 'while' looping, need stop when 'nbytes == 0', or will cause issue.
> ('nbytes' is size_t which is always bigger or equal than zero).
> 
> The related warning: (with EXTRA_CFLAGS=-W)
>   lib/mpi/mpicoder.c:40:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]

Acked-by: David Howells <dhowells@...hat.com>
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